Accessory breast
Condition of having an additional breast
Accessory breasts, also known as polymastia, supernumerary breasts, or mammae erraticae, is the condition of having an additional breast. These extra breasts may appear with or without nipples or areolae. The condition, a form of atavism, is most commonly observed in males and is generally harmless, often going untreated. However, in recent...